Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

Image Part Number Description / PDF Quantity Rfq
ALD2721EPBL

ALD2721EPBL

Advanced Linear Devices, Inc.

IC OPAMP GP 2 CIRCUIT 14DIP

0

ALD1726PAL

ALD1726PAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

0

ALD1736SAL

ALD1736SAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

0

ALD1706PAL

ALD1706PAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

0

ALD4704SBL

ALD4704SBL

Advanced Linear Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SOIC

0

ALD2711PAL

ALD2711PAL

Advanced Linear Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DIP

0

ALD1726ESAL

ALD1726ESAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

0

ALD2704PAL

ALD2704PAL

Advanced Linear Devices, Inc.

IC OPAMP GP 2 CIRCUIT 8DIP

0

ALD4701APBL

ALD4701APBL

Advanced Linear Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14DIP

0

ALD1704APAL

ALD1704APAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

0

ALD4704ASBL

ALD4704ASBL

Advanced Linear Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SOIC

0

ALD1721GSAL

ALD1721GSAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

0

ALD1726SAL

ALD1726SAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

0

ALD2721ESBL

ALD2721ESBL

Advanced Linear Devices, Inc.

IC OPAMP GP 2 CIRCUIT 14SOIC

0

ALD4706ASBL

ALD4706ASBL

Advanced Linear Devices, Inc.

IC OPAMP GP 4 CIRCUIT 14SOIC

0

ALD1732SAL

ALD1732SAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

0

ALD1702APAL

ALD1702APAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8DIP

0

ALD2701SBL

ALD2701SBL

Advanced Linear Devices, Inc.

IC OPAMP GP 2 CIRCUIT 14SOIC

0

ALD1702BSAL

ALD1702BSAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

0

ALD1712SAL

ALD1712SAL

Advanced Linear Devices, Inc.

IC OPAMP GP 1 CIRCUIT 8SOIC

0

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps

1. Overview

Linear amplifiers are analog ICs that process continuous signals with high fidelity. This category includes instrumentation amplifiers (In-Amps), operational amplifiers (OP Amps), and buffer amplifiers. They are critical in signal conditioning, filtering, and voltage amplification across electronics, medical devices, and industrial systems.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Instrumentation AmplifiersHigh CMRR, low offset voltage, fixed/gain-programmableSensor bridges, medical instrumentation, precision data acquisition
Operational AmplifiersVoltage feedback, high gain, configurable circuitsActive filters, integrators, comparators, audio amplifiers
Buffer AmplifiersHigh input impedance, unity gain, drive capabilityADC drivers, signal isolation, impedance matching

3. Structure and Composition

Typical IC construction includes: - Differential Input Stage: Bipolar/JFET transistors for high impedance - Gain Stage: Cascoded amplification with laser-trimmed resistors - Output Stage: Class AB push-pull for low distortion - Protection Circuits: ESD protection, thermal shutdown Packaged in 8-20 pin configurations (SOIC, TSSOP, QFN).

4. Key Technical Specifications

ParameterImportance
Gain Bandwidth Product (GBP)Determines frequency response capability
Input Offset Voltage (Vos)Impacts DC precision in low-level signal amplification
Slew Rate (SR)Defines maximum signal transition speed
Common-Mode Rejection Ratio (CMRR)Measures noise/interference immunity
Quiescent Current (Iq)Impacts power efficiency in battery applications

5. Application Fields

  • Medical: ECG machines, blood analyzers
  • Industrial: PLCs, strain gauge interfaces
  • Consumer: Audio preamplifiers, sensor hubs
  • Telecom: Fiber optic transimpedance amplifiers
  • Automotive: Battery management system sensors

6. Leading Manufacturers and Products

ManufacturerProduct Highlights
Analog DevicesAD8221 (Instrumentation Amp), OP1177 (Precision OP Amp)
TILM741 (Classic OP Amp), INA128 (Low-power In-Amp)
STMicroelectronicsTSV912 (Rail-to-Rail OP Amp), LMV358 (Low-voltage Buffer)
MaximMAX4463 (Audio Buffer), MAX41460 (High-speed OP Amp)

7. Selection Guidelines

Key considerations: - Bandwidth vs. power consumption trade-off - Required CMRR in noisy environments - Rail-to-rail output for low-voltage systems - Temperature stability in industrial applications - Cost-sensitive vs. precision design priorities

8. Industry Trends

Future directions include: - Sub-1V operation for IoT devices - Integration with digital calibration (smart amplifiers) - GaN/SiC-based amplifiers for high-voltage applications - AI-driven parameter optimization tools - Automotive-grade amplifiers for ADAS systems

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